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The relationship between relative yield and relative water use is formulated,based on these data, a optimal irrigation scheduling under sprinkling irrigation condition can be made or the lower level of soil moisture in different growing stage might be teken as the indicator for the scheduling irrifgation in winter wheat.

喷灌条件下土壤水分、硝态氮空间变异特征研究：应用地统计学理论，以半方差函数为工具分析不同灌溉制度下，土壤含水率(0～60cm)和土壤中硝态氮在相应深度的空间分布，用各类模型拟合半方差图，在此基础上应用普通克立格技术估算未知点的土壤含水率，使用最优内插值法绘制土壤含水率和硝态氮在田间的空间分布等值线图。

Vibration equations of the system could be formulated by using the principle of total potential energy with stationary value in elastic syst...

研究了移动荷载的速度、钢轨的类型和钢轨支点的弹性系数对钢轨及轨道板动力响应的影响。

Under the circumstances that some prior knowledge about the possible fault can be obtained,the dynamic behavior of the fault is proposed and used to solve fault estimation problem.While,if there is no extra knowledge available about the possible fault other than the condition of l_2 bounded,the residual generation is formulated into a problem of observer-based H_∞filtering problem in the sense of stochastic,and the linear matrix inequality approach to solve this problem is proposed.

对于能够了解部分故障先验知识的情况，提出描述故障结构特性的动态模型，解决H_∞故障估计问题；而当故障信息完全未知情况下，将基于观测器的残差产生器设计归结为随机意义下的H_∞滤波问题，提出了该问题求解的线性矩阵不等式方法。

Based on different optimization criteria, this problem is formulated as a chance constrained programming model and a stochastic programming model with recourse.

提出了基于随机模拟的禁忌搜索算法，基于随机机产生的测试问题的实验结果验证了算法的有效性。

According to the concept of strain energy of cracked materials, the orientation tensor of crack was defined. Considering the crack-closing and friction between crack surface under compression, The damage tensor, damage strain and effective elastic modulus were formulated. A method for discrete description of damage mechanism was given, and the evolution equation of discrete orientation density of crack was obtained. The relationship of micromechanism and the macro-representation of concrete failure were studied.

从含裂纹材料的变形能出发，引出了裂纹的方位张量；在考虑裂纹受压闭合与滑动摩擦的基础上，给出了损伤张量、损伤应变和有效弹性系数的表达式，在损伤机构离散化方法的基础上，给出了方位密度的演化方程；将上述损伤理论应用于混凝土的损伤分析，研究了混凝土破坏的微观机制与宏观表现的关系及Griffith准则和Mohr-Coulomb准则的相似性问题，对修正的Griffith准则进行了改进。

Also the finite element dynamic equations of structure were formulated, and computer code was developed.

应用有限元法对加筋复合材料层合板结构进行固有振动特性和导纳特性分析。

First of all, a system of linearized equations was set up with respect to an atmosphere at rest, and a couple eigenvalue-eigenfunction problem was formulated, which consists of horizontal and vertical structure equations with suitable boundary conditions.

首先，建立了静止大气状态下模式的线性化系统，并在适当的边界条件下将线性化系统分解成具有垂直与水平结构方程的本征值、本征函数耦合问题。

Coppertone Kids? SPF 50 sunscreen lotion is uniquely formulated to provide instant waterproof protection. This non-irritating formula provides broad spectrum protection keeping kids protected from the sun's harmful UVA and UVB rays. Hypoallergenic. PABA-Free. Dermatologist tested.

CoppertoneKids SPF50防晒乳液独特的配方提供迅速的防水保护，不刺激的配方提供更宽的光谱保护儿童不被阳光晒伤，防UVA和UVB射线，低变应原，不含PABA，皮肤医生验证。

The idea is often formulated in terms of the thesis of supervenience: mental states supervene on physical states, but are not reducible to them.

这个观点通常用随附理论的方式描述：精神状态随附在物理状态上，但又不能还原到物理状态。

Specially formulated for the needs of mature skin to help increase the elasticity and suppleness around the eye area and promote circulation.

特殊配方的需要成熟的皮肤，以帮助增加肌肤弹性与柔软的眼睛周围地区，并促进流通。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。